Burglar-alarm lock



Jan. 9, 1923. 1,441,516

J A. MACK BURGLAR ALARM LOCKv FILED APR 22. 1922.

.llflhlll' Juul' "Il" ImmHhl [WWI mi, w1

Maga/9 f. .17m/s.

i. patented danig,

y await Weleda m y Josnria n. inf-rein or nin'runm coronario.

" y Bimenes-Anania noon.

Application iednp'rl 25%, 1922. Serialilo. 555,981.

new anduseful linprovenients in Burglar-` Fiat z Alarm Locks; and I do declare theiollowing to be a full, clear7 and exact description of `the invention, such as will` `enable others skilled in the art to `.whichit appertains to make and use the saine, vreference being,r had to the accompanying drawings, and to the characters or' kreferente marked thereomj `a rod or wire 3 extends to a levend on which form a part of this` specification.

This linvention relates to "combination .locks and has reference to a lock thatis constructed `on the `permutation principle and provided with means whereby a. signal will be operated.,wheneverthe lock is tain` pered with by an unauthorized person.

lt is well known that persons skilled in that `particular art can open by skill or by tO v force almost anyk lock that has been constructed and that therefore reliance cannot be had on locks per se. i

It is the objeotof this invention to provide a lock that shall y be or simple yet rigid and substantial 'construction "and which will `be comparatively sale against "being openedyby any one not conversant with the combination andinanner orl operating the same. l do not, howeven; rely entirely Non the lock for proteetionbu't combine with the lock a signal and means for operating the :signal ywhenever the lock* is` taniil'iered with.l am aware` 4that it is old toinake locks that will `operate signals ot suine suit, but l provide my leek with a plurality uit dil'li'erent elements which,cri-operate to opf `erate the signal whenever anyl one oli several movable parts or the lock are disturbedin V1 the least, and injtliis manner I provide alock that will operate an ala-rin as soon as it, is `tanfipered with at all. .i

.lnorderto moreclearly describemy in` vention I shall yhave reference 4to the attached drawing in which:

Fig. 1 shows a perspective view oa door to which my lock and signal have beenap- 2 is a section takeny on line 2--2 a section taken on `line a section taken von line fel signaling means and Fig. is a detail of the dial. Y

Fig.' 6 `is an assembly of the knobs and tumbler discs. v w

Fig. 7 is a view showingtlie proposed Fig; 8 is a section taken online 8 8 f lphe saine reference:characteil will be used several views. l Numeral 11 represents a to designate the same partsthroughout'the door which Ainay be a safe door or a door of any other kind. f

Fitted te` a door `1 is a lock 2 from which they opposite side of the door" bymeans y.

oi which the alarm 5 is operatedin a inanneijthat will hereinafter be described..v`

liiy locky consists, ofa metal easing 46 .haw

ing one side thereof removable and pro` vided with a door 8 lthe, purpose o which will hereinafter appear. ln Figs'. l. Sand 4 l have shown iny lock attached to the inside `of a' wooden or metal door 9. `The locking` niecl'ianisin'` consists or a bolt l0,` which `is slidably mounted iiijan openingl l1 in the front side of the lock casingy `and has its 1 inner end guided byflugs 12. Boltfl() *has* means of which it may be rotated so as to y reciprocate the bolt 10 in.y a manner which willgbereadily apparent. z

.In order to prevent thespindle l5 troni` beingrotated in more iihan one direction l if: tcliet liti which is engaged by a pawl The ratchet teeth 2O are of suchlength as toperinit the pawl to be moved backwards and forwards a distance,somewhat lgreater than the length of teeth `2l.` In

order to lock thebolt l() inprotruding position I provide a plurality of tuinblers22,

provided withgear teeth 26 and a notch secure tethesanui by means of a pin 17, a

`23, 24 and 25.` lachlof these tumblers are j 27. The notches 27 are oit a'width whichy will permit the inner end of] bolt `1O"to"enter therein and of suicientvdepth to.v allow the bolt to be withdrawn untilits outerend is iush with the outside of the klock 6. In

lorder tov rotate each one of the tuinblers independently and to any extent desired l secure tuinbler`22 tothe lower, or inner end oit a tubular member 2'? to .the outer end of which'a liange 28 is secured. Tumbler [23 tion.

the end of the boltV l0 from being` held in `contact with the tumblers `while they are is to'engage similar teeth on discs 37 ot' ,cured to the inner end of tubular member 3l to the outer end of which a tlange 32 is secured While tumbler 25 is secured tothe inner end of rodv 33 Whose outer end has a flange or head 34C. By rotating flange '28 1 the tumbler 22 can` be` rotated amount desired, and in `a similar manner the tumblers 23, 24 and'25 may be rotated by Vmeans ofthe membersl 30,32 and 3a respectively. It is apparent that some 'means must ybe provided .tocprevent all of the tuinblers from being rotated wvhenever any one el: the

flanges is turned kand for this purpose l have provided each tumblerwith a detent spring `35 which 4engages vthe ,circumference thereof `With suhicient force to preventthe friction between the various surfaces from moving thesame. By means of the dial 36 andthe graduations on theiianges 28, 30, 327 and `34 the tumblersl may be readily arranged so that the `notches 27' will register to receive theend 'of bolt `l0.

Il I were interested inthe locking kmeans alone the elements above described wouldk constitute an operative combination'but I desire to provide "my lock With means `that will voperate the signal 5 `Whenever Van unauthorized person shall tamper With` the same, and for this purpose l provide the following' mechanism. As before pointed out the tumblers are each provided with gear teeth 2avhic'hperform a double -lunc- In the'first placeteeth 26l prevent rotated for .the reason thatfvvhen the bolt is reciprocated invvardly-the'teeth 21 will which there is one for each tumbler. Discs ,37 are rotatably ijnouuted on a common spin# die 38 and have a segment thereo'lE cut away as indicated at 39.y `'Vhen discs 37 are posi tioned as shovvn in Fig. 2 they are inoperaf` tive but if they are rotated so that the teeth thereof engage vvith the teeth 26 they Will be rotated Whenever the' tumblers are ro` tated.

@For the purpose of adjusting the position of discs v37, I provide a door `8 in the side '7 of the casing; this door may be opened andthe discs adjusted Whenever it is desired to setythem. Secured to eachoi'f the 3: discs 37 isa :vvire'40 which is connected with gear Wheel ll having a. segment thereof removed as indicated at 42. Each vWheel is secured vto theA end ol: a spindle 43, which has on its outer end a knob del. By rotating the knob del the gear Wheel-s ll may be rotated. to any position. When the door is locked gears l1 are rotated in the directionV of the arrows until they engage With the .gears on the side of the bolt l0. When the teeth of gears 4l engage those on the bolt,

it is evident that longitudinal move ment of the bolt 'Will rotate the Wheels.I l/Vire's l5 extend from points near the outer periphery of the Wheels to Wire 3 and'there.

fore the rotating gears ll vvillserve to op-l erate the signal 5.` Knobsea may be provided vvith` a mark by Which the op'eratoris enabled to' determine the position of the gears 4l. Detent springs 61 are arranged to co-operatefivith thegearsjll so as to hold them in any position Vto which' theyV areset'.

Iit the rear edge of the door l provide ya lever 4 Which is pivoted at "A spring 47 is provided` between the .lower end ofllever l and thedoor so as to hold it normally in the position shovvn in Figa?. y s

To the'upper end'of line Ll theend of Wire 3 is connectedand to the lower end there is pivoted a plunger 4S which' is no'r mally Within" the tube 4.9"in "the" door l.

lhen'the .Wire 3 is pulled lever' 4l Will be rotated in a counter-cloclreivise. direction and plunger i8 will beprojected and will v A engage the end ofanother plunger 50 which is secured to the end of apivoted pawl- 60 which controls the signal.

The signal may be 'madein different Ways but l have Shown a' plate 6l on Which;is mounted a spindle 62 to which is rotatably secured a toothed disc 63. A spring 64 has its outer end secured to the vdisc at 65 and its innerend to the spindle. The spr-ingzis put under tension -or Wound by rotating` the disc in a clockwise direction and thepawl 60 ei'igaging the teeth of thefdisc *will keep the same 'from turning. Secured to the disc G3 is a hnger 6G. 'l secure a revolver 67 to the plate (3l by suitable means and adjust the same so that the linger 66 will strike the trigger 63 and fire the' revolver which may be loaded with a blank cartridge. By

suitablemodilication may use a self cock4 ing revolver and have itflired va' number of times. I may also have the linger 66 operate a switch. and sound'an alarm at -a distant place. As previously pointed out there't are a large variety of Ways in which 'an alarm might be soundedy and so 'I amnot concerned in f this case with the -spe'cic I shall not fur-- alarm or signalling means. ther describe the same. l l

'From the above'description it will appear that Ihave provided a combination,lockzoi'k ya substantial and serviceableV design land have provided the same vvith means which will perate a signal or sound an alarm` when any unauthorized personstartstami l' claim is pering with the lock. Ita .person moves anyone olf the tumblers 22, 23, 24: or 25 he will rotate one of discs 37 and set oil' the alarm and if he turns the handle 16 he will rotate gears dlfandsound the alarm. lf he turns either one oic knobs il he lrotates the gears il and sounds the alarm While, it the lock isvsprung by means of explosives the resultant disturbance will sound the alarm Having now l. Alcol: comprising a bolt, means for reciprocating said bolt, a plurality of tumblers for preventing movement of the bolt` in one direction, notches in said tumblers adapted to receive the end ot the bolt, means for rotating each tumbler independently o i 'the others, gear teeth in the edges of said j,

tumblers, a plurality of rotatably mounted gear Wheels having a segment removed from one side and mounted for engagementvvith the tumblers and means connected to each of said gears adapted to ,connect the same to a signal in such a manner that it will 'function when either of the gears is rotated.

2. A lock comprising a bolt, meanstor re ciprocating said bolt, a plurality `of tumblers for preventing movement of `the bolt in lone direction, notches in 'said tumblers adapted to receive the end ot the bolt, means for rotating each tumbler independently ot in one direction, notches in said tuinblers` adapted to receive the end of the bolt, means -for rotating each tumbler independently ot the others, gear "teeth in the edges of said intime' v described my invention what Y tumblers, gear teeth on the end of the bolt adapted tolcofoperate Withthe gear teethon ter, gear teeth on the sides of said bolt and a gear having a segment cuttherefrom and spaced to co-operate With the gears onthe bolt each' of said gears being adaptedfto have a wire attached thereto to operateia signal When `the kgear is rotated.`

a. A lpclrcomprising a bolt, means for reciprocating said'bolt, a plurality of tumthe'tuinbler to prevent rotation of the lati l blers vfor `preventing movement of the boltf in one direction, notches in saidtumblers adapted to receive the end of the bolt, means ior rotating each tumbler independently ofv `the other, gear teeth in the edgesV of said tumblers, gear teeth on the end of the bolt adaptedto c'o-operate With the gear `teeth on the tumbler `to preventfrotation of the c latter, gearteeth on the sides of said bolt,

a gear Wheel pivotally mounted on each t side of the bolt, means for rotating said,` gears, said-gears `having a segment removed therefrom and a Wire attached to each of said gears, said Wire extending toa signal land adapted to operate thesame vvhen any one of the `gears rotates.

5. A lock comprising a bolt, meansv tor` reciprocating said bolt, a plurality of tumblers for preventing movement of the bolt in `one direction, notches in said tumblers adapted to receive the end of the bolt, means "for rotatingeachtumbler independently of theothers, gear teeth inthe edges of said tumblers, gear" teeth on the end of the bolt adapted to co-operate With the gear teeth i on the tumbler to prevent rotation of the `latter, gear teeth on the sides of said bolt,

a gear Wheel pivotally, mountedl on each side of the'y bolt and means for rotating said gears, said gears having a segment removed therefrom, and a Wire extending `from each gear and adapted to operatea signal.

In testimony whereof l ailiii my signature.

Josee-n A.. MACK. 

